About the author  ⁄ Marci Goodwin

Marci Goodwin can be found blogging at TheHomeschoolScientist.com, where her goal is to take the fear out of and put the fun into homeschool science. Check out her science column in Homeschooling Today Magazine.

Mammals have certain characteristics that set them apart from other animals. Mammals, in contrast to fishes, amphibians, and reptiles, are warm-blooded animals, as are birds. The skin of most mammals is more or less hairy, in contrast to the scale-covered fish and the feathered birds. The young of most mammals are ...

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